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Keiji Sakamoto
Keiji Sakamoto
Optics
Optoelectronics
Physics
Light tube
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レンズ鏡筒用支持枠、レンズ保持構造、レンズ鏡筒およびカメラ
2007
Hideyuki Hashi
Hironori Honjo
Keiji Iwasaki
Shinichi Iwasaki
Keiji Sakamoto
Tetsuya Uno
tetuya uno
keizi iwasaki
sin'iti iwasaki
hironori honjou
hideyuki hasi
keisi sakamoto
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レンズ鏡筒、撮像装置、レンズ鏡筒の検査方法および製造方法
2007
Eiichi Nagaoka
Takayuki Hayashi
Keiji Sakamoto
Kenichi Hayashi
Daisuke Ito
Yuji Adachi
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Developmennt of Traffic Signs using Light Tube
2000
Journal of The Illuminating Engineering Institute of Japan
Katsumi Akiba
Nobuhiko Kitamura
Keiji Sakamoto
Makoto Yamada
Osamu Kuramitsu
Takashi Osugi
Hideto Tachioka
Shigefumi Ueda
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